[css-transforms-2] Update links for permanent redirects pointed out by link checker.

Author: dbaron

css-transforms-2/Overview.bs

@@ -9,10 +9,10 @@ Group: csswg
 ED: https://drafts.csswg.org/css-transforms-2/
 TR: https://www.w3.org/TR/css-transforms-2/
 Previous Version: https://www.w3.org/TR/2020/WD-css-transforms-2-20200303/
-Editor: Tab Atkins Jr., Google https://google.com, http://xanthir.com/contact/, w3cid 42199
-Editor: L. David Baron, Google https://google.com, https://dbaron.org/, w3cid 15393
-Editor: Simon Fraser, Apple Inc http://www.apple.com/, simon.fraser@apple.com, w3cid 44066
-Editor: Dean Jackson, Apple Inc http://www.apple.com/, dino@apple.com, w3cid 42080
+Editor: Tab Atkins Jr., Google https://www.google.com, https://xanthir.com/contact/, w3cid 42199
+Editor: L. David Baron, Google https://www.google.com, https://dbaron.org/, w3cid 15393
+Editor: Simon Fraser, Apple Inc https://www.apple.com/, simon.fraser@apple.com, w3cid 44066
+Editor: Dean Jackson, Apple Inc https://www.apple.com/, dino@apple.com, w3cid 42080
 Editor: Theresa O'Connor, Apple Inc http://www.apple.com/, eoconnor@apple.com, w3cid 40614
 Abstract: CSS transforms allows elements styled with CSS to be transformed in two-dimensional or three-dimensional space.
 Abstract:
@@ -335,7 +335,7 @@ In a 3D rendering context, rendering and sorting of elements is done as follows:
 	Appendix E, Section E.2 Painting Order</a>.
 2. Intersection is performed between this set of planes,
 	according to
-	<a href="http://en.wikipedia.org/wiki/Newell%27s_algorithm">Newell's algorithm</a>,
+	<a href="https://en.wikipedia.org/wiki/Newell%27s_algorithm">Newell's algorithm</a>,
 	with the planes transformed by the [=accumulated 3D transformation matrix=].
 	Coplanar [=3D transformed elements=] are rendered in painting order.
 
@@ -487,7 +487,7 @@ The final value of the transform used to render an element in a <a>3D rendering
 		4. Let <var>current element</var> be the <var>parent element</var>.
 		5. Let <var>parent element</var> be the <var>current element</var>'s parent.
 
-Note: as described here, the <a>accumulated 3D transformation matrix</a> takes into account offsets (including the scroll offset) generated by the <a href="https://www.w3.org/TR/REC-CSS2/visuren.html">visual formatting model</a> on the transformed element, and elements in its ancestor chain up to and including the element that establishes the its <a>3D rendering context</a>.
+Note: as described here, the <a>accumulated 3D transformation matrix</a> takes into account offsets (including the scroll offset) generated by the <a href="https://www.w3.org/TR/CSS2/visuren.html">visual formatting model</a> on the transformed element, and elements in its ancestor chain up to and including the element that establishes the its <a>3D rendering context</a>.
 
 ### Backface Visibility ### {#backface-visibility}
 
@@ -546,7 +546,7 @@ This <a>accumulated 3D transformation matrix</a> is a 4&times;4 matrix, while th
 
 If <var>w</var> > 0, (<var>x</var>&prime;, <var>y</var>&prime;, <var>z</var>&prime;) = (<var>x</var>/<var>w</var>, <var>y</var>/<var>w</var>, <var>z</var>/<var>w</var>).
 
-If <var>w</var> = 0, (<var>x</var>&prime;, <var>y</var>&prime;, <var>z</var>&prime;) = (<var>x</var> &sdot; <var>n</var>, <var>y</var> &sdot; <var>n</var>, <var>z</var> &sdot; <var>n</var>).  <var>n</var> is an implementation-dependent value that should be chosen so that <var>x</var>&prime; or <var>y</var>&prime; is much larger than the viewport size, if possible.  For example, (5px, 22px, 0px, 0) might become (5000px, 22000px, 0px), with <var>n</var> = 1000, but this value of <var>n</var> would be too small for (0.1px, 0.05px, 0px, 0). This specification does not define the value of <var>n</var> exactly.  Conceptually, (<var>x</var>&prime;, <var>y</var>&prime;, <var>z</var>&prime;) is <a href="http://en.wikipedia.org/wiki/Plane_at_infinity">infinitely far</a> in the direction (<var>x</var>, <var>y</var>, <var>z</var>).
+If <var>w</var> = 0, (<var>x</var>&prime;, <var>y</var>&prime;, <var>z</var>&prime;) = (<var>x</var> &sdot; <var>n</var>, <var>y</var> &sdot; <var>n</var>, <var>z</var> &sdot; <var>n</var>).  <var>n</var> is an implementation-dependent value that should be chosen so that <var>x</var>&prime; or <var>y</var>&prime; is much larger than the viewport size, if possible.  For example, (5px, 22px, 0px, 0) might become (5000px, 22000px, 0px), with <var>n</var> = 1000, but this value of <var>n</var> would be too small for (0.1px, 0.05px, 0px, 0). This specification does not define the value of <var>n</var> exactly.  Conceptually, (<var>x</var>&prime;, <var>y</var>&prime;, <var>z</var>&prime;) is <a href="https://en.wikipedia.org/wiki/Plane_at_infinity">infinitely far</a> in the direction (<var>x</var>, <var>y</var>, <var>z</var>).
 
 If <var>w</var> &lt; 0 for all four corners of the transformed box, the box is not rendered.